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Determination of Platinum, Palladium and Rhodium Contents in Insoluble Slag of Spent Catalysts by ICP-AES
Pages: 72-77
Year: Issue:  3
Journal: Precious Metals

Keyword:  analytical chemistryinductively coupled plasma atomic emission spectrometry (ICP-AES)insoluble slag of fine chemical industryspent catalystsplatinumpalladiumrhodium;
Abstract: With alkali fusion, tellurium co-precipitation separation, contents of Pt, Pd and Rh in insoluble slag of fine-chemical industry spent catalysts were determined by ICP-AES. The conditions of alkali fusion, tellurium co-precipitation separation, components of the enrichment, and ICP-AES determination condition were systemic investigated. Results indicated that Pt, Pd and Rh in the slag can be completely separated and enriched by fusion and co-precipitation. Contents of 653~3652 g/t Pt, 447~3804 g/t Pd, and 539~6433 g/t Rh in the slag were determined. The relative standard deviation (RSD), recoveries of standard addition were 0.84%~1.78%, 97.0%~99.4% for Pt, 1.05%~1.82%, 97.0%~100.6% for Pd, and 1.00%~2.12%, 98.2%~100.4% for Rh, respectively. The proposed method was rapid, easy to master and has beed applied to production analysis.
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